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PRODID:Institute for Theoretical Physics - Events
X-WR-CALDESC:SFB1238
X-WR-CALNAME:SFB1238
X-WR-TIMEZONE:Europe/Berlin
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SUMMARY:SFB1238 | Dirk Sander
DTSTART;VALUE=DATE-TIME:20171025T143000
DTEND;VALUE=DATE-TIME:20171025T153000
DTSTAMP;VALUE=DATE-TIME:20180222T061700Z
UID:0000001050@events.thp.uni-koeln.de
DESCRIPTION:Dirk Sander\, Max-Planck-Institut für Mikrostrukturphysik\, H
alle\n\nNew insights into nanomagnetism and superconductivity by low-tempe
rature scanning tunneling microscopy\n\nSpin-polarized scanning tunneling
microscopy at low temperature (8 K) and in high magnetic fields (6 T) is a
powerful technique to investigate magnetic properties of individual nanos
cale objects ranging in size form single atoms to several thousand atoms.
I focus on the magnetization reversal and the spin-dependent electronic pr
operties of bilayer Co\, Fe-decorated Co and Fe islands on Cu(111). We fin
d a novel noncollinear\, helical magnetic order in the Fe islands\, which
is identified by a magnetic stripe contrast with a period of 1.28 nm. The
high spatial resolution of the scanning tunneling spectroscopy reveals th
e significance of structural and electronic relaxation for the magnetic an
isotropy and the spin-dependent transport properties of single islands. In
an outlook I present first results from our new STM\, which operates at 0
.3 K in a vector magnetic field\, on superconductivity of Pb monolayers an
d on the proximity effect.\n\nContact Person: T. Michely
LOCATION:Seminar Room of the Institute of Physics II
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